During my design research, I made my own frames to play and understand the principle of “Minimal Surface Tension”
I make them on request, so that you also can experience the “magic” The frames are custom made, and build by myself.
You need a bucket filled with soapy water, easily made with home detergent/dish soap.
Dip the frame completely under the soapy water.
Step3 (optional) To make the bubbles stronger you can add a small amount of glycerine, sold at your local supermarket or drugstore.